However, I have the feeling you can inflate the REI one more because the pressure is higher. If I plan on sleeping on that thing overnight, I don't care about t

However, I have the feeling you can inflate the REI one more because the pressure is higher. If I plan on sleeping on that thing overnight, I don't care about the added inconvenience, if it means it will be more comfortable. I agree that for a nap in the park, the OP one is better and you look like less of a dork inflating it.